NOTIFYICONDATA

Contains information that the system needs to process taskbar status area messages.

typedef struct _NOTIFYICONDATA { // nid

DWORD cbSize;

HWND hWnd;

UINT uID;

UINT uFlags;

UINT uCallbackMessage;

HICON hIcon;

char szTip[64];

} NOTIFYICONDATA, *PNOTIFYICONDATA;

Members

cbSize

Size of the NOTIFYICONDATA structure.

hWnd

Handle of the window that receives notification messages associated with an icon in the taskbar status area.

uID

Application-defined identifier of the taskbar icon.

uFlags

Array of flags that indicate which of the other members contain valid data. This member can be a combination of these values:

NIF_ICON The hIcon member is valid.
NIF_MESSAGE The uCallbackMessage member is valid.
NIF_TIP The szTip member is valid.

uCallbackMessage

Application-defined message identifier. The system uses the specified identifier for notification messages that it sends to the window identified by hWnd whenever a mouse event occurs in the bounding rectangle of the icon.

hIcon

Handle of the icon to add, modify, or delete.

szTip

Tooltip text to display for the icon.